Variations in Sediment Accumulation Rates and the Flux of Labile Organic Matter in Eastern Lake Superior Basins

Klump, J. Val; Paddock, Robert W.; Remsen, Charles C.; Fitzgerald, Sharon; Boraas, Martin E.; Anderson, Patrick D.

doi:10.1016/s0380-1330(89)71465-9

Cited by 37 publications

(33 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The benthic efflux data combined with the sediment trap data indicate that ϳ65% of the organic material arriving at the lake floor during the summer is recycled. There are a host of caveats with making this comparison on such a limited data set; however, this value is consistent with the full sediment trap data set, the lakewide organic carbon burial rate (Johnson et al 1982), and other data on benthic carbon cycling (Klump et al 1989;E.A.H. and J.M.…”

supporting

confidence: 68%

Hypolimnetic oxidation rates in Lake Superior: Role of dissolved organic material on the lake's carbon budget

McManus

Heinen

Baehr

2003

Limnology & Oceanography

View full text Add to dashboard Cite

On average, the water column of Lake Superior is undersaturated with respect to dissolved oxygen and supersaturated with respect to carbon dioxide during the summer-stratified period. On the basis of temporal changes in water column dissolved oxygen, we calculate rates of oxygen consumption that range from 0.19 to 0.75 mmol m. These rates are a factor of 5-10 times larger than can be supported by the particulate carbon settling rates and benthic oxygen consumption rates. In addition, on the basis of the limited information available, dissolved allochthonous carbon inputs are insufficient to account for the calculated rates of carbon oxidation. Rates of nitrate and total CO 2 (⌺CO 2 ) production are 0.019 Ϯ 0.012 and 0.13 Ϯ 0.06 mmol m Ϫ3 d Ϫ1, respectively, and are consistent with the oxidation of a dissolved organic component that is similar in composition (C : N ratio) to the settling particulate material. Previously published estimates of total primary production were smaller but similar in magnitude to our integrated water column respiration rates. We interpret the observed imbalance between particulate carbon delivered to the deep lake and the calculated rate of carbon oxidation to be the result of the decomposition of dissolved organic carbon that appears to have both an autochthonous and an allochthonous component.A simplistic view of aquatic ecosystem carbon cycling is that photosynthetic production, limited by the availability of one or more major nutrients, generates a large pool of fixed (autochthonous) carbon in the euphotic zone. Most of that organic material is ''recycled'' within the euphotic zone with some, typically small, fraction being ''exported'' out of the euphotic zone. A portion of this export production is then remineralized within the deep water column or within the sediments, and the balance is permanently buried (e.g., Dymond et al. 1996 and references therein). The record of this buried ''residual'' production serves as the basis for paleoclimate studies. For these studies, variations in the accumulation rate of biogenic material in lacustrine systems are 1 Corresponding author (mcmanus@coas.oregonstate.edu). Present address: College of Oceanic and Atmospheric Sciences, 104 Ocean Admin. Bldg., Corvallis, Oregon 97331-5503. AcknowledgmentsSpecial thanks are extended to the Co-PIs on the project, Elise Ralph and Robert Sterner. Elise Ralph kindly processed the conductivity-temperature-depth data and provided an initial draft of the map. Chris Moser helped with much of the hard work on deck; his dedication and perseverance are greatly appreciated. Jason Agnich, Angela Cates, Bronwen Cumberland, Phillip Hommerding, Keely Johnson, Melissa Jones, Julie Klejeski, Kimberly Kolbeck, and Christina Willie all helped in the laboratory or in the field. Mike DeGrandpre (Univ. MT) provided the instrumentation for the comparative pCO 2 data. Simone Alin and Tom Johnson provided insightful comments on an early draft of this manuscript. Conversations with Jon Cole and Jim Cotner helped clarify...

show abstract

supporting

confidence: 68%

Hypolimnetic oxidation rates in Lake Superior: Role of dissolved organic material on the lake's carbon budget

McManus

Heinen

Baehr

2003

Limnology & Oceanography

View full text Add to dashboard Cite

show abstract

“…In the oligotrophic lakes Superior and Baikal, TOC-MAR was 4 and 7 gC m −2 yr −1 (see Table S2), respectively, and the resulting F red from the sediment was close to zero (Och et al, 2012;Klump et al, 1989;Remsen et al, 1989;Richardson and Nealson, 1989). In addition to low gross sedimentation of OC, the high sediment O 2 penetration depth (of around 1-3 cm) causes a long exposure time to oxic conditions and thus oxic mineralization of a large fraction of the deposit (Maerki et al, 2006;Martin et al, 1993;Li et al, 2012).…”

Section: Factors Limiting F Red and Toc-marmentioning

confidence: 98%

“…TOC-MAR and F red values from Lake Erie (LE) were extracted from Matisoff et al (1977), Adams et al (1982), and Smith and Matisoff (2008). Values for Lake Superior (LS) were compiled from Klump et al (1989), Remsen et al (1989), Richardson and Nealson (1989), Heinen and McManus (2004), and Li et al (2012). but mirror the slower processes of anaerobic degradation of buried OC and F red . Hence, in Fig.…”

Section: F Red Controlled By Sediment Toc Mass Accumulation Ratementioning

confidence: 99%

Organic carbon mass accumulation rate regulates the flux of reduced substances from the sediments of deep lakes

et al. 2017

View full text Add to dashboard Cite

Abstract. The flux of reduced substances, such as methane and ammonium, from the sediment to the bottom water (F red ) is one of the major factors contributing to the consumption of oxygen in the hypolimnia of lakes and thus crucial for lake oxygen management. This study presents fluxes based on sediment porewater measurements from different water depths of five deep lakes of differing trophic states. In mesoto eutrophic lakes F red was directly proportional to the total organic carbon mass accumulation rate (TOC-MAR) of the sediments. TOC-MAR and thus F red in eutrophic lakes decreased systematically with increasing mean hypolimnion depth (z H ), suggesting that high oxygen concentrations in the deep waters of lakes were essential for the extent of organic matter mineralization leaving a smaller fraction for anaerobic degradation and thus formation of reduced compounds. Consequently, F red was low in the 310 m deep mesoeutrophic Lake Geneva, with high O 2 concentrations in the hypolimnion. By contrast, seasonal anoxic conditions enhanced F red in the deep basin of oligotrophic Lake Aegeri. As TOC-MAR and z H are based on more readily available data, these relationships allow estimating the areal O 2 consumption rate by reduced compounds from the sediments where no direct flux measurements are available.

show abstract

“…Combining their reported organic C burial rate and molar C:N in settling material and extrapolating to the entire lake basin results in an estimated N burial rate of 1.33 × 10 9 mol year −1 . Using a whole-lake organic C burial estimate of 0.45 Tg year −1 (Urban et al, 2005) and a mass C:N of 10 (Klump et al, 1989) results in an estimated N burial rate of 3.21 × 10 9 mol year −1 .…”

Section: Model Developmentmentioning

confidence: 99%

Modeling historical trends in Lake Superior total nitrogen concentrations

McDonald

Urban

Casey

2010

Journal of Great Lakes Research

View full text Add to dashboard Cite

Variations in Sediment Accumulation Rates and the Flux of Labile Organic Matter in Eastern Lake Superior Basins

Cited by 37 publications

References 35 publications

Hypolimnetic oxidation rates in Lake Superior: Role of dissolved organic material on the lake's carbon budget

Hypolimnetic oxidation rates in Lake Superior: Role of dissolved organic material on the lake's carbon budget

Organic carbon mass accumulation rate regulates the flux of reduced substances from the sediments of deep lakes

Modeling historical trends in Lake Superior total nitrogen concentrations

Contact Info

Product

Resources

About